可以进行简单的频域均衡是OFDM最大的优势之一。
One of biggest superiorities of OFDM is that it can do simple frequency domain equalize.
设计了数字频率均衡网络,并实现了对传感系统的频域均衡与标定。
In order to compensate the frequency characteristic of the probe, a digital frequency balancing method is proposed, and the digital balancing network is designed.
本文展现了两种针对相干光传输系统的频域均衡方案,并介绍了相关应用。
Two FDE configurations for coherent optical transmission are presented and some applications are also described.
与整体频域均衡算法比较,可以在避免求大型矩阵逆的复杂算法上获得更好的性能优势。
Compared with the entire frequency equalizer, this algorithm has better performance because it avoid the large matrix inversion.
介绍了分组传输系统频域均衡器的结构和设计方法,并研究了其误码率(BER)性能。
In the paper, we introduce the structure of frequency -domain equalizer and its design. its BER performance are also studied.
介绍了单载波频域均衡技术的原理,与单载波时域均衡以及多载波ofdm系统进行了比较。
This paper introduces the theory of Single Carrier Frequency-Domain Equalization (SC-FDE), and compares the SC-FDE system with Single Carrier Time-Domain Equalization (SC-TDE) system and OFDM system.
本文重点对单载波频域均衡(SC -FDE)传输方案中的信道估计和频域均衡算法进行了研究。
In this paper, channel estimation and FDE algorithm in the SC-FDE system are mainly studied.
因此本文提出了环境自适应频域均衡的概念:根据信道估计的结果来自适应地选取合适的频域均衡算法。
Thus, a notion of channel adaptive equalization is presented in the paper. Relative algorithm is adaptively selected according to the channel estimation result.
与时域均衡器的比较表明,频域均衡可较大地改善分组传输系统的均衡效果,缺点是接收端的计算量有所增加。
The simulation results show that the frequency-domain equalization approach can improve the BER performance great-ly than the time -domain equalization. The drawback of the…
研究了LS算法及其DFT改进算法,并将高斯白噪声信道中的信噪比估计方法引入到单载波频域均衡系统中。
LS algorithm and DFT-based algorithm were studied and signal-to-noise estimation algorithms in AWGN channel were introduced to SC-FDE systems.
介绍了单载波频域均衡(SC -FDE)系统以及SC - FDE所常用的频域块最小均方(FBLMS)算法。
This paper introduces the system of single carrier frequency domain equalization (SC-FDE) and the frequency-domain block least-mean-square (FBLMS) algorithm for SC-FDE.
对于传统的OFDM系统来说,如果循环前缀的长度大于信道的时延扩散值,则可以通过简单的频域均衡来解调OF DM信号。
If the length of its cyclic prefix is larger than the delay spread of transmission channel, we can get a simple frequency equalizer to demodulate OFDM signal.
正交频分复用(OFDM)技术、单载波频域均衡技术(SC -FDE)和多天线技术都是有助于达到这一目标的有效技术。
Orthogonal frequency division multiplexing (OFDM), single carrier frequency domain equalization (SC-FDE) and multiple antennas technique are efficient techniques to achieve this goal.
从理论上详细分析了基于滤波器组的窄带干扰抑制技术能够克服基于FFT频域均衡缺点的主要原因,并在此基础上提出了基于自适应子带合并的算法。
It is considered completely in theory why the NBI method based on filter Banks can overcome the disadvantages of FFT method, and the adaptive subband merging is presented.
频域均衡作为关键技术不仅运用于DS- CDMA系统,而且也运用于多载波cdma (MC - CDMA)系统中来克服信道的频率选择性。
Moreover, FDE has been adopted as a key technique for both DS-CDMA and multi-carrier (MC -) CDMA to overcome the channel frequency-selectivity.
本文设计的均衡器采用了时域和频域联合处理的自适应均衡技术,其中频域均衡作为DFE的前馈滤波部分,时域的反馈滤波的部分使用常规的横向滤波器。
The equalization in frequency domain is the feed-forward filtering of the DFE. And the traditional transversal filter is used in the feed-back filtering in time domain.
对于RFI和窄带噪声干扰,本文研究了频域陷波和谱均衡两种方法,并将之应用到信号域来抑制窄带干扰。
For RFI and narrowband noise interferences, this dissertation studies notch filter and spectrum equilibrium and USES them to suppress narrow jammings in signal domain.
基于恢复理想信号频谱的逆滤波原理,利用通道均衡法对接收通道的失配进行了校正。 通道均衡可在时域或频域实现。
The way, based on the principle of inverse filtering for recovering the ideal signals, can be realized both in time domain and in frequency domain.
利用自开发软件,对图像进行灰度变换和直方图均衡化处理后,采用频域同态滤波的方法对图像进行降噪滤波处理。
After the gray transformation and the histogram equalization, these images were filtered by a frequency-domain homomorphic filter, hence noises in the images were greatly reduced.
本文基于OFDM系统基本框架的数学建模和公式推导,提出了一种基于预处理的OFDM低复杂度频域线性均衡算法。
Based on mathematical modeling of OFDM basic framework and formulas deriving, a low complexity frequency-domain linear equalization algorithm based on pre-processing is proposed in this dissertation.
主要工作如下:(1)针对辐射计通道增益不一致性引入的系统误差,研究了通道均衡失配模型,分别采用了矩匹配法和频域滤波法进行仿真。
The main content of the thesis is as follows: (1) the channel equalization mismatch model has been studied specific to the systematic errors caused by the differences of radiometer channel gain.
主要工作如下:(1)针对辐射计通道增益不一致性引入的系统误差,研究了通道均衡失配模型,分别采用了矩匹配法和频域滤波法进行仿真。
The main content of the thesis is as follows: (1) the channel equalization mismatch model has been studied specific to the systematic errors caused by the differences of radiometer channel gain.
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